Stop-motion for drawing-frames.



Pat n ed July 3|, I900.

s n; WET-mama; STOP MOTIDN FOB DRAWING TFRAMES.

(up how.)

(Application filed Oct. 5, 1899.)

WITNESSES llVV/VTOR ,6? 77% Znwrg A rromvs rs THE ECKER' mncsmwmms co. vasmuswn. n. a

. machinery, such as is known im the art as.

SILAS'M. WETMORE, or-FAYE TEvmLE; NORTPLCAROLINA, Assicnon j on ONE-HALF TO WALTER sroe morl'on FOR srncrrrcn'rron forming 5m or Letters Application filed October 5, 1.899.

T0 aZlr-whom; it minty (tandem:

Be it known that 1, SILAsMAOBEEQWEr- MORE, residing at Fayetteville, in the county of Cumberland and State of North Carolina,

have invented certain new and 'useful Improvements in Step -Motions for Drawing- Frames, of which the following-is a specific'aiion. 1

This invention relates to improvements in stop-motions for drawing-frames of cotton coiler drawing-frames.

In theconstruction of drawing-frames for coiling :cotton it is usual to, provide said frames with mechanical, electrical or elec-v tromechanical stop -motions,-'generally so constructed as to be automatically set (by reason of the can becoming empty or the sliver breaking) to arrest the motion (through; the media of coacting mechanisms) of the en-' tire machine by shifting the drive-belt or the clutch upon the drive-shaft -'Stop.mechanisms constructed and operating on the lines indicated fail to eiiect all of the results desired ,particularly so incoiler-drawing-frames equipped with a numbenof railway-heads, in

thatfwhen "an -end'of any oneof the heads runsout or one of the strands of the sliver breaks the shaft operating the entire set of heads comprised in the complete machine is held at restand'the machine remains inert until theoperator adjuststhe broken head.

In n ills where t' small help is employed this objectionable feature is of a serious nature, asone operator usually looks after a number of machines, and by reason thereof it freuently occurs that a machine thrown out of gear by the stop motions, such as in general use, must of necessity remain idleuntil the operator can findtime to readjust the same and again start it in motion. My invention primarily seeks to provide a simple and efieotive stop-motion for each head'of the series constituting the complete machine,adapted to operate independently, whereby any one of thehead-s of the drawing-frame can be thrown out oi operation antomatlcally without dis/5 iurbin g the 1"e':iiain ing head's-'in other words,

withputstopping the machine. To thisend my inventionco mprehends in its general nature electromagnet cal devices" L. HOLT, or SAME PLACE. D AWING-FRA S.

' for each head held to a normal or inoperative position through the mediaof the perfect part of the said devices, which part when a sliver breaks either at the corded end or strand endauto'matically drops and sets into it coaets without interfering with the operating-shaft or drive-gearing operating the re mai ningheads. I

My invention also embodies a novel electromechanical mechanism including a separate circuit-closer for each strand of the sliver and a shifter engaging all of the strands of the sliver relatively so constructed -and adapted "of the strands of the sliver breaks its cointo close the circuit and energ'izethe electromagnet to operate the-"shifting bar, which then grabs the remaining strands and eiiects sutficient tensionthereon to cause theni'to break, thereby cutting out the one head without interfering with the opprationbf'the remaining heads: My invention also'compre'hends in its more specific nature a novel form of trumpet or guide constructedto coact with my'improved stop-motion mechanism, wherebj the ends of the brbken heads after beingpassed through the draw-rolls in the usual manner can be grasped by the operator and inserted into the trumpet or guide without necessitating the stopping of the machine, an operatiomthat is necessary in 'the ordinaryconstruction of trumpet ands'top-motion mechanism.

In the practical application of -my invention various detailed coiistruction's of mechanism maybe employed to effect the objects above outlined and which may; fall within on the score of economy, simplicity of construction, and ease of-- operation to arrange ti-allyin the manner disclosed in-the accompanying drawings, in which- Figure 1, is a diagrammatic plan view of the coilerdrawingjrame, showing the same an operative conditiorrthe stopmotion tothrow, out of operation the head with which.

.cident circuit-closer will automatically drop the parts constituting my invention substan-' sliver or strand thereofengaging a movable .to operate in such manner that when any one the scope of my invention. I prefer, however, I

equipped with sixheaders, Fig. 2 is an enlarged plan view of a part thereof, illustrat- *ingtChefbf the heads and my impfibved stopmotion-and trumpet-guide device connected therewith. Fig. 3 is an enlarged plan of a part of the drawing-frame shown in Fig. 2 Fig. 4 is afrontelevation of such-part. 5 is atransverse section-on t e line 5 50f I Fig.. 3; Fig. 6 is a diagrai'nlnatic view illuswill suffice for-all. a My improved stop-motion comprises a seci trating the manner of arranging the contacts in series. in 'thejbattery-circuit; Fig. 7 is a detail viewof the trumpet or guide; and Fig". 8. is a cross-section thereof on the lines 8 of "Fig. 7. Fig. Qisadcti-il View looking in the direction indicated by the arrow inFi'g. 5.

Referring tort-he accompanying drawings,

in Which-liken!)merals-indicate likeparts in all the figures}; indicates the drawing-frame,

which is shown can ipped wi th si-x heads, each of which-is .fed from six causthatj is, sixstrands are fed to the drawing-rolls of, each iheadto form the sliver. h 2 2" indicate the front and back drawing. rolls, one set for each head ;.3, the sliver,"

guides; 4, thecalender or sliver-compressingrolls, each of which, together with the oper ating-gearin g therefommay be of the ordinary construction, as said parts per se form no portionof my invention.

As before statedJprovidean independentlyoperated stop-motion for each head, and as all of the said, stop-motions are alike adetailed descriptionof suchmotion for one head tional guide disposed between the usual sliver-guides andthe front drawing-rollsfand thesaid sectional guide when in a normal Y position has its fingers registering with the .frontsliver-guidesB, so as to provide for a straightway run of the strands. from the guides? to the front drawing-rolls 2, which,

it should be stated, are fluted, as usual, forthe a section 4,.havingfinger-members 45. ed to-register with the fingers 4? when the '-proper engagement therewith of the strands.

The sectional guides consistof 'a fixedly-held 7 4 and a movable section 4 also having fingers adapt"- 4 sections are-in. their normal position and to slide over the front faces thereof, as shown 1 in'Fig. 5'. The movable section 4) is moved 15 weight-a spring 6 being shown-and it is to its normal position by a suitable spring or 1 arranged to be moved in an opposite -direction transverselyto the direction of pullfof the strand-sliver by electromagnetic force.

"For thislpurpose an electromagnet-7 is pro- ' videddisposed ad acent one end of the head,

the armature 7 of which forms a part of the pivoted lever 7, having pivotal connection withithe sliding guide-section 4*, the parts j '60 being-so arranged that when the magnet is energized in the manner presently described the armature-lever will draw the sliding guidesection across its mate and pullthe several cotton. strands sidewis'e for a purpose pre's-' ently made clear.

At a point betweenthe main sliver-guides and the sectional guide therefor I provide a Fig."

supplemental guide formed of two metallic sections 8 8", one-of which forms a positlve and the other the negative terminal of the electric circuit connecting with the electromagnet 7. The plates 8 8 havea stepped ar'rangement of passages 'or slots through whicht'he several strandsof the sliver pass, one sliver passing throughieach slot;

Operatively mounted over each slot 8 is disposed a contact-maker, which may be a roll or drop member 9, electrically joined at one end with one guide plate section -8'-,. and nor-. mally held fro'm contact 'with the other platesection by reason of its restingon the-cotton strand that passes through the respective slot over which the 'said member Qoperates.

So far as described the manner in which my-imp'rovements operate isbest explained as follows: Assuming the'head to be in a properoperative condition, all the strands be-' .ingunbroken, the several contact-makers are held lifted to keep the-magnet-circuit broken,

the shifting guide being then insucli position that its fingers will register with the main sliver-guldes, and thereby permit the strands to pass directly and freely over the guides 3 and connect the-terminal' pljates 8 8, and thereby close the circuit to the ele'ctromagnet, which I instantly,-th roughthe movementof its .arrnature-lever, shifts the sliding guide member,

which movement of i the said guide member serves to'grab the remaining. and unbroken strands of the sliver anddra-ws-them taut under tension suiliciently to causethem to break usually at a point just in advance-ofthe front draw-rolls, and thereby throfw theentire head out of operation, it being understood-that 'such result is effected without disturbing the remaining heads, it also being obvious that the same results will occur when-the end of the strand'is drawn u p-from the can. It will thus be seen that nay-improved stop-motion in-anycaso of break of the sliver-strand or interruption'of the feed of the strands. only the I head in which the sliver issoeffected will stopwvhilo-the remaining heads proceed 7 I with their work, Thisis obviously an advantageoverthe present usualforin of stop-motion that-throws the entire machine out of operagon when one headruns out or its sliver there r-i'sin any waybroken. .As thestrands usually break in advance of the front draw- -rolls, to again. star-t the head the'operator picks up the ends which in myform of stop- .motion-are -1n-mally held withinthe main guides and the supplemental. sectional guidefingers and pushes the said ends into. the

draw-rolls, which operation is effected during the running of the rolls. Ordinarily the ends after being passed through the draw-rolls are connected, twisted, and passed through the to the trumpet it frequently necessitates'the stopping of the machine to prevent the clean waste. choking the trumpet. To overcome. this and make it possible to quickly add eff i'ectively guide the strand ends that are passed trumpet and into the calender or sliver-coinpressing rolls. In the passing of the strands through the rear drawing-rollsto the calenden or slivercompressing -rolls', I proyide a I special form of guide which I term an open trumpet, in which the said strands can be almost instantaneously fed and properly guided without necessitating the stoppage of the ma chineii. The opentrumpet, which is illustrated in detail in Figs. 7 and 8,.omprises a segmental disk portion 10, which lies in a planeyvith the sliver-body as it" passes in 'the real flilf'awrollsjandforms a guide-rest therefon f The outer'edge of the disk 10 terminates centrally in a semiconical'pendent extension 10, tapering toward the lower end, which terminates in a depressed contracted seat 10, the .base of whichis'of a diameter substantially that of the outletend of the ordinary'funnel-trumpet. The. end walls that form the seat 1O are made sufiiciently thin to have a spring action, and.

cated in Fig. 0.

. By providing a-guide as described it is manifest the operator need not twist the ends of the strands to thread the trumpet, as is now done, but, can grasp thejseveral ends and squeeze them down in the seat 10*, withthe ends hangingbetween the calender-rolls to trumpet-guide holding the sliver-strands sufficiently compressedto prevent them from pulling out of the guide a By means of my stop-motion and open a trumpet or guide themachine need not be stopped until all of the cans fed to the several heads have become exhausted, as any one or moreof the headscan be automatically thrown out of operation Without interfering with the remainder, and such heads as have been stopped can be started again without stopping any part of the drive-gearing for the other heads.

As the sliver sometimes breaks between the calender-rolls by reason of the clearer waste choking the trumpet, I provide a supplemental circuit-closer device (indicated by 12) that is normally held open by contact with:

that part of the sliver under the calenderrolls. (See Figs. 5and9.) This circuit-closer is also in the natu reof a drop member, which,

. together with the circuit-closers 8 S, is held in series with a magnet-circuit, as diagram maticallyillustrated in Fig. 6, so that in case ither oi: the closers 12 or 9 is operated the magnet will be energized. The electrical con nections, including the member 9, will create a stop-motion in case of any-break between .the draw-rolls and the feeder-can, while theelectrical devices 12 will eitect a stop-motion in case of any. breakage between the back draw-rolls and the calender-rolls. j

Having thus described my invention, what is v I c1aim,ai1ddesire't0 secure by Letters Pat- 1. [An electric stop-motion forcotton-coiler drawing mechanisms, comprising devicesfor breaking the several strands of the sliver; a circuit-closer normally heldopen by the sliver butautoma'tically closing upon a break in the sliver; and electromechanical: devices governed by the circuit-closer for shifting the strand-breaking devices to an operative condition by the closing of the circuit-closer.

2-. An electric stop-motion for cotton-coiler drawing mechanisms, comprising devices for breaking the severalstrands of thesliver; a plurality of circuit-closers, one engagingthe sliver at the rear of the draw-rolls and one engaging the sliver in advance ofthesaid rolls, said circuit-closers being normally held open by the sliver, but automatically closingupon a break in'the sli-ver;. and electromechanical devices governed by the said circuit-closers for shifting the strand-breaking devices into an operative condition by the closing of either of the said circuit-closers.

3. As an improvement in cotton coiler drawing-machines, in combination with the drawing-rollsand the calender-rolls; a guide for receiving the sliver as itpasses out of the drawing-rolls to the calender-rolls, said guide consisting of a rest portion and a pendent member having a-receiving -mouth open its ;length and terminating in'a contracted .seat for the purposes specified. be engaged thereby, the seat portion ofgjthe 4. As an improvement in cotton coiler drawing-machines, the combination with the drawing rolls and the. calender rolls, of a guide for receiving the sliver as it passes'from the drawing-rolls to the calender-rolls, said guideconsisti'ng of a rest portion and a pendent scmiconical member terminating in a contracted seat, said member having its discharge end projected at an acute angle to the'coacting surfaces of the calender-rolls.

5. The combination with the drawing-rolls, and a shifting guide engaging the several strands of thesliver; of electromechanicaldevices connected with the'said guide and adapted, when energized, to move the-guide in a direction to break the several sliverstrands; a separate circuit-closer for each sliver-strand, normally held open by contact with the sliver-strand, andadapted to move to a closing position when the strand passes from engagement therewith, all ot the said closers being in circuit with the electrome chanical devices for operating the shifting guide, as specified.

6. In a mechanism for the purposes described; the combination with the drawing- I-0118mm the main guides for the sliver- -strands; of a supplemental guide member therefor, said guide member being adapted.

teaantematically shift transversely of the line of *te'e'd of the sliver, whereby to break the sliver-strands; shifting mechanisms eoacting [with the said supplemental guide member,

said shifting mechanism including a trip nor,-

. mally held to an inoperative position by the sliver and adapted to operate to shift the strand-breaking guide when a break occurs 7 Y inthe sliver as specified.

chemical devices 'coacting with the, shifting \Vitness'es:

guide and-adapted l 1en energized to shift the said'guideand. break the strands; a sup- {pleniental' guide disposed between themain guide and the shifting guide, said;suppleme11- tal'guide. havingia separate passage for each 5 strand and consisting 01; two plates forming the terminals of the circuit-connected with the aforesaid electromechanical devices; and a gravity circuit-closer, for each passageway in the said supplemental guide, each closure being normally held open by reasonof its comechanical devices for operating the shifting guide for the purposes specified.

' SILAS ll. WEllMORE, D E ER i,

- .Lonis Ig n'rEmoHQ incidentsliver-strand and adapted to drop-to a closing position when the strand passes from thereunder, whereby to energize the-electro- 

